HPS211H1 Lecture Notes - Lecture 9: Electromagnetic Induction, Electrostatics, Carl Friedrich Gauss
29 Feb 2012
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Summary y early studies of electricity and magnetism y electric current, electrodynamics, electromagnetic induction y. Faraday s concept of field y luminiferous aether (ether) y william thomson s field theory y james clerk maxwell s field theory. Electricity & magnetism in antiquity y amber effect y losestone from magnesia, asia minor. New instruments for electrical experiments in 18th c y electric friction machine y leyden jar. Electrified bodies carry + or charge. Magnetic force follows same law, but with two poles. (carl gauss) Alessandro volta y voltaic pile y voltaic pile as a steady source of electricity -> electric current. Hans christian orsted y electromagnetism (1819) y electricity couples with magnetism. y. Change of magnetic state induced electromotive force. Three electric & magnetic effects by the mid-19th c. Electric & magnetic forces as sums of actions between constituent charged corpuscles. Action at a distance (like laplacian interpretation of gravity)
